If you google “cold brew”, every other link is more informative than this book. It’s too contemplative and teaches you nothing. (I do not understand especially the enormous effort of author to prove that cold brew is unfairly considered to be a hipster drink) It tells you to experiment with your grinding, beans’ origin, water, etc., but remains silent on HOW to experiment and what to look for. Cocktail and mocktail receipts in the last part are fine, but hardly innovative. Read at your local cafe but it is not worth buying, even if you are completely new with cold brew. Use google instead.